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Patented Dec, 29,1896. T

N. REYNOLDS.

AUTOMATIC SHUTTER FOR FIRE PROTEGTION.

(No Model.)

Inventor.

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W itnessesl UNITED STATES PATENT FFICE.

NOAH I-I. REYNOLDS, OF GRAND RAPIDS, MICHIGAN, ASSIGNOR OF HALF TOCHARLES TV. DAVIDSON, ()F SAME PLACE.

AUTOMATIC SHUTTER FOR 'FIRE PROTECTION.

SPECIFICATION forming part of Letters Patent No. 574,002, dated December29, 1896. Application filed September 17, 1395. Serial No. 562,812. (Nomodel.)

To all whom, it'nmy cancer/z:

Be it known that I, NOAH H. REYNOLDS, a citizen of the United States,residing at Grand Rapids, in the county of Kent and State of Michigan,have invented certain new'and useful Improvements in Automatic Shuttersfor Fire Protection, of which the following is a specification.

My invention relates to improvements in door and window shutters for useon fireproof buildings; and its objects are, first, to provide anappliance that will close the shutters automatically from the effects ofunusual heat in any portion of the building, and, second, to provide anappliance for automatically closing fire-shutters that may beoperatedeither with air, electricity, water, or heat, or any otherdesirable element. I attain these objects by the mechanism illustratedin the accompanying drawings, in which Figure 1 shows my appliance uponan enlarged scale and a shutter-and opening upon a smaller scale, toshow more completely the manner of applying the same. Fig. 2 is across-section of the diaphragm that actuates the levers to release thelatch that holds the shutter open; and Fig. 3 shows my levers, &c., asactuated by electricity.

Similar letters refer to similar parts thro ughout the several views.

A is the shutter.

13 is the opening to be closed.

0 are the rollers that support the shutter, and D is the track uponwhich the rollers 0 travel.

E is a latch that is pivoted at one end to position shown in Fig. 1.This latch is pivoted to the support G, and its lower end is in positionto engage with the end of the angle lever or catch G which is pivoted tothe support G. The lower arm g of this angle-lever presses against theflexible cover I) of the chamber 11, which is designed to receive airunder pressure, and is secured in such a position that when thecompressed air isadinitted therein the cover is thrown to the positionshown in Fig. l and indicated by the dotted lines in Fig. 2, and the armG will be held to the position shown in Fig. 1 and will hold the latch Fto place; but if the air is exhausted from the auxiliary chamber theflexible cover will collapse to the position shown in Fig. 2 andindicated by the dotted lines in Fig. 1, and will allow the arm 9 to bedrawn back by the spring g" and the arm G to be drawn down, so that thelatch F may be thrown over by the weight of the door upon its oppositeend and will release the door and allow it to move to position over theopening B. (See Fig. 1.)

I place a screw g through the end of the arm G in position to bear uponthe support G for the purpose of regulating the necessary travel of thearm G to draw it off from the arm F and free the latch and allow theshutter to close.

I I provide for inflating the auxiliary chamher by the use of anair-chamber K, which I fill with air to the requisite pressure andconnect it with the auxiliary chamber by a pipe I, so that a freepassage is provided for the air from the one to the other and for theescape of the air from the chambers by inserting a number of fusibleplugs J at points most likely to be affected by an excess of heatproduced by a fire in any portion of the build ing, so that the air willescape and allow the flexible head to collapse with the resultshereinbefore stated.

In Fig. 3 I have indicated how this appliance maybe actuated byelectricity. In this view H represents a temporary magnet,whioh may beof anyof the well-known forms available for the purpose. I is theconductor-wire ordinarily used for the purpose. J is a thermostat, and Kis an electric battery. The completion of the electric circuit iseitected by the expansion of the metals of which the thermostat is madesufficiently to bring them in contact in the usual manner or it may beeffected in any other available manner, as the releasing of a metal bythe melting of some easily-melting substance and allowing it to come incontact with a companion metal conductor.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent of the United States, is-

1. The combination with a fire-shutter, of a latch pivoted at one end tothe shutter, a

second latch pivoted to stand at right angles therewith, a .lever tohold said latch inconta-ct with the first latch, an air-chamber, anauxiliary chamber having a flexible cover in position to actuate saidlever, an air-pipe connecting said chambers, and fusible plugs in saidchambers and pipe, substantially as and for the purpose set forth.

2. The combination in a fire-shutter of a series of latches for securingthe shutter open, an angle-lever for locking said latches to place, aset-screw for adjusting said angle-lever, an airchamber, an auxiliaryair-chainber having a flexible cover, a spring upon one arm of saidangle-lever to draw it toward the flexible cover, pipes connecting saidchambers,and apertures in said chambers and pipes NOAH II. REYNOLDS.

In presence 0f- CHAS. W. DAVIDSON, I. J. CILLEY.

